<template>
    <div class="shopcar-container">
       <div class="goods-list">

           <!--商品列表区域-->

           <div class="mui-card" v-for="(item,i) in goodslist" :key="item.id">
               <div class="mui-card-content">
                   <div class="mui-card-content-inner">
                      <mt-switch v-model="$store.getters.getGoodsSelected[item.id]" @change="selectedChanged(item.id,$store.getters.getGoodsSelected[item.id])"></mt-switch>
                       <img :src="item.thumb_path" alt="">
                       <div class="info">
                           <h1>{{item.title}}</h1>
                           <p>
                               <span class="price">${{item.sell_price}}</span>
                               <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                               <!--
                               如何从购物车中获取商品数量
                               1、我们可以先创建一个空对象，然后循环购物车中所有商品的数量，把当前循环这条商品的id，作为对象的属性名,count值作为对象的属性值，这样，当把所有的商品循环一遍，就会得到一个对象
                               -->

                               <a href="#" @click.prevent="remove(item.id,i)">删除</a>
                           </p>
                       </div>
                   </div>
               </div>
           </div>

           <!--结算区域-->
           <div class="mui-card">
               <div class="mui-card-content">
                   <div class="mui-card-content-inner jiesuan">
                       <div class="left">
                           <p>总计(不含运费)</p>
                           <p>已勾选商品<span class="red">{{$store.getters.getGoodsCountAndAmount.count}}</span>件，总价$<span class="red">${{$store.getters.getGoodsCountAndAmount.amount}}</span></p>
                       </div>
                       <mt-button type="danger">去结算</mt-button>
                   </div>
               </div>
           </div>
       </div>

        <p>{{$store.getters.getGoodsSelected}}</p>

    </div>
</template>

<script>

    import numbox from '../subcomponents/shopcar_numbox.vue'

    export default {
        data(){
            return {
                goodslist:[] //购物车中所有商品的数据
            }
        },
        created(){
            this.getGoodsList();
        },
        methods:{
            getGoodsList(){
                //1、获取到store中所有的商品的id，然后拼接出一个逗号分隔的字符串
                var idArr = []
                this.$store.state.car.forEach(item => idArr.push(item.id));
                //如果购物车中没有商品，则直接返回，不需要请求数据接口，否则会报错
                if(idArr.length <= 0){
                    return;
                }
                //获取购物车商品列表
                this.$http.get("api/goods/getshopcarlist/"+idArr.join(",")).then(result => {
                     this.goodslist = result.body.message;
                })

            },
            remove(id,index){
                //点击删除，把商品从store中根据传递的id删除，同时，把当前组件中的goodslist中，对应要删除的那个商品，使用index来删除
                this.goodslist.splice(index,1)
                this.$store.commit('removeFromCar',id)
            },
            selectedChanged(id,val){
                //每当点击开关，把最新的开关状态,同步到store中
                this.$store.commit('updateGoodsSelected',{id,selected:val})
            }
        },
        components:{

        },
        components:{
            numbox
        }
    }
</script>

<style lang="scss" scoped>
.shopcar-container{
    background-color: #eee;
    overflow: hidden;

    .goods-list{

        .mui-card-content-inner{
            display: flex;
            align-items: center;
        }

        img{
            width: 60px;
            height: 60px;
        }

        h1{
            font-size: 13px;
        }

        .info{

            display: flex;
            flex-direction: column;
            justify-content:space-between;

            .price{
                color: red;
                font-weight: bold;
            }
        }
    }

    .jiesuan{
        display: flex;
        justify-content: space-between;
        align-items: center;

        .red{
            color: red;
            font-weight: bold;
            font-size: 16px;
        }
    }
}
</style>